Florence sources say Chelsea scouts have been spotted at Fiorentina's preseason camp to run a check on Jovetic.

Chelsea owner Roman Abramovich failed with a bid for Jovetic almost two years ago after he starred against Liverpool in the Champions League.

Having fully recovered from a serious knee injury suffered last season, the Montenegro international is back on Abramovich's radar.

Chelsea boss Andre Villas-Boas is also a big fan and has been alerted to news Jovetic's new contract talks with Fiorentina has stalled. The striker is now inside the final two years of his existing deal.